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Every now and then I’m installing service application on a development machine, and I just want to find the next available port that I can use. Here is a handy Powershell script to do that, which can be easily run as part of a deployment script.

The easiest way to call this is to include it directly in another powershell script, but if you want to save this as a script that you can call from a different script as a cmdlet, you need to execute this command first, which allows execution of unsigned scripts from the local machine.

set-ExecutionPolicy RemoteSigned

After you’re done with your processing, you may want to set this back to the default restricted setting: